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Orientation structures in injection - molded pellets of polystyrene / carbon nanotube nanocomposites / Cuiping Yuan in Industrial & engineering chemistry research, Vol. 51 N° 36 (Septembre 2012) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 51 N° 36 (Septembre 2012) . - pp. 11695-11699 Titre : Orientation structures in injection - molded pellets of polystyrene / carbon nanotube nanocomposites Type de document : texte imprimé Auteurs : Cuiping Yuan, Auteur ; Guangming Chen, Auteur ; Jiping Yang, Auteur Année de publication : 2012 Article en page(s) : pp. 11695-11699 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Nanocomposite  Pellet Résumé : The orientation structures of both carbon nanotubes (CNTs) and polymer molecular chains in the skin―core structure of polystyrene/multiwalled carbon nanotube (PS/MWCNT) nanocomposite melt-injection-molded pellets were examined. Scanning electron microscopic (SEM) and transmission electron microscopic (TEM) images clearly show the MWCNT preferred orientation along the melt shearing direction, while polarized Raman spectroscopy results consolidate the MWCNT preferred orientation in each of the skin, medium, and core layers of the injection-molded pellets. By infrared dichroism measurements, a preferred orientation of the PS side groups (phenyl rings) perpendicular to the melt shearing direction was deduced at all depths of the present injection-molded nanocomposite pellet. Meanwhile, the MWCNTs have little effect on the random orientation of the PS main chain (-CH2- groups) with a dichrolc ratio near unity. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=26350337 [article] Orientation structures in injection - molded pellets of polystyrene / carbon nanotube nanocomposites [texte imprimé] / Cuiping Yuan, Auteur ; Guangming Chen, Auteur ; Jiping Yang, Auteur . - 2012 . - pp. 11695-11699. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 51 N° 36 (Septembre 2012) . - pp. 11695-11699 Mots-clés : Nanocomposite  Pellet Résumé : The orientation structures of both carbon nanotubes (CNTs) and polymer molecular chains in the skin―core structure of polystyrene/multiwalled carbon nanotube (PS/MWCNT) nanocomposite melt-injection-molded pellets were examined. Scanning electron microscopic (SEM) and transmission electron microscopic (TEM) images clearly show the MWCNT preferred orientation along the melt shearing direction, while polarized Raman spectroscopy results consolidate the MWCNT preferred orientation in each of the skin, medium, and core layers of the injection-molded pellets. By infrared dichroism measurements, a preferred orientation of the PS side groups (phenyl rings) perpendicular to the melt shearing direction was deduced at all depths of the present injection-molded nanocomposite pellet. Meanwhile, the MWCNTs have little effect on the random orientation of the PS main chain (-CH2- groups) with a dichrolc ratio near unity. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=26350337